Water heater



Sgpt. 2 9 1337- w. E. O'BRIEN WATER HEATER Filed Feb. 24, 1925 CJI Patented Sept. 27, 1927.

UNITED STATES WILLIAM E, onnrmv, or swanron, vnniron'r.

v WATER HEATER.

Application filed February 24, 1923. Serial No. 620,930.

This invention is a heater for maintaining water at the desired temperature for house heating purposes.

One of the objects of the'invention is to provide a device of simple construction, which may be connected with a radiator or the like, and having means whereby water to be supplied to said radiator may be heated by extraneous means, such as an oil lamp,-electric light, gas flame, or coal stove. A further object is to provide a heater hav ing flues which are fiat and deep, and proportioned to provide maximum heating sur faces for any given Volume of water to be heated. A further object is to provide means for insuring asubstantially perfect water circulation.

The invention will be hereinafter fully set forth and particularly pointed out in the claim.-

In the accompanying drawing Figure 1 is a side View illustrating a heater constructed in accordance with the invention. Figure 2 is a top plan view thereof. Figures 8 and 4: are vertical sectional views taken at right angles to each other.

Referring to the drawing, the heater is illustrated in the form of a casing, circular in cross section, provided with annularly spaced inner and outer walls 10 and 11, joined, together at their tops 12, and bottoms 13. The top 12 and bottom 18 are each constructed of an annular member of ii-shape in cross section as shown, so as to provide flanges extending vertically in a manner to engage the inner surface of the wall 11 and the outer surface of the wall 10. By this means a proper spacing between the walls 10 and 11 is maintained to provide an annular water chamber. A cold Water inlet 7 pipe 15, connected with any suitable source of supply, communicates with the lower portion of said annular chamber 14:, and an outlet pipe 16 leads from the top thereof. The pipe 16 may lead to any suitable point where the hot water may be utilized, orthe pipes 15 and 16 may be connected with the return and supply pipes, respectively, of a hot water radiator.

Extending transversely across the circular space surrounded by the chamber 14, are a plurality of straight parallel water chambers 18, being connected to and communicating with the chamber 14 at opposite positions, the spaces between said water chambers allowing for the passage of hot air and heated gases emanating from a source of heat, such as a lamp or stove (not shown),

placed directly beneath the device. It will be noted that the straight water chambers 18 are somewhat shorter in length than the length of the casing 14, so as to allow of circulation of heat and air under and over 1 said water chambers, the ends of said chamher being approximately equidistant. from the planes of the top and bottom of the chamber 1 1.

In operation, a suitable heating device is placed beneath the casing in such position that the heat will circulate around and between the water chambers 18, and also impinge against the inner wall 11 of the chamber 14. area is presented to the action of the heat,

and the temperature of the water is quickly raised to a degree sufficient to insure circulation. With the pipes 15 and 16 connected with a radiator, the circulation set up by the heated water is sufiicient to maintain the necessary circulation through the radiainvention, and described an operative mani;

ner of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the forms of its use, what is claimed.

A heater of the character describedcomprising a casing provided with annularly spaced inner and outer walls, annular top and bottom members of U-shape in cross section so as to provide flanges engaging the inner surface of the inner wall and the outer surface of the outer'wall, respectively, to hold said walls in spaced relation to provide a circular water chamber, aseries of narrow, straight-walled parallel'water chambers extending diametrically across the space surrounded by said inner wall and at- In this manner a very large tached thereto, said straight chambers openr ing at their ends into said circular chamber and having their top and bottom edges equally spaced inwardly from the top and outlet being located diametrically opposite bottom members respectively, a water inlet to each other and in line with the planes of pipe extending through the top member and the respective open ends of said straight 10 having its discharge end continguous to the chambers. 5 bottom member, and an outlet leading from In testimony whereof I have hereunto set the upper end of said circular chamber my hand. 7. c through said top member, said inlet and WILLIAM E. OBRIEN. 

